Multiple grinding-machine.



J. W. W. CUMMING.

MULTIPLE GRINDING MACHINE.

APPLICATION FILED 0CT.25. 1916.

l ,2 l 7,41 '7. N Patented Feb. 27, 1917.

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J. W. W. CUMMING.

MULTIPLE GRINDING MACHINE.

APPLICATION FILED 00125. I9l6.

l 2 l '7 ,4: 1 7 Patented Feb. 27, 1917.

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' ZJ yvuM lbdz J WW Cumming,

J. w. w. CUMMING. MULTIPLE GRINDING MACHINE.

APPLICATION FILED OCT-25, I916.

s SHE ETS-SHEET a.

Patented Feb. 27,

JOHN W. W. CUMMING, OF THE UNITED STATES NAVY.

MnL'rIPLE GRINDING-MACHINE.

Application filed October 25, 1916. Serial No. 127,620.

To all whom it may concern:

Be it known that 1, JOHN \V. V. CUM- nrxo, a lieutenant in the United States Navy, acitizen of the United States, atpresent attached to the U. S. S. Prometheus,

have invented certain new and useful Im-- provements in Multiple Grinding-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

.This invention relates to grinding machines of the type adapted to grind the ends of boiler tubes or other pipes preparatory to flanging the same, and hasfor its object to provide a machine of this character whichwill be more simple in construction, more eflicient'in action and less costly to manufacture than those heretofore proosed.

\Vith these and other objects in view the invention consists in the novel details of construction and combinations of parts more fully hereinafter disclosed and particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the views Figure 1 is a central longitudinal sec- -t-ionalview, partly in elevation, of one form of machine made in accordance with this invention;

Fig. .2 is an enlarged detail sectional view, taken on the line 2-2 of Fig. 1, and looking in the direction of the arrows;

Fig. 3 is an end elevational view of the parts shown in Fig.- 1, as seen from the right of said figure;

Fig. 4 is a view similar to Fig. 3, but looking from the left of Fig. 1; and

Fig. 5 is a view similar-to Fig. 3, but

showing the parts in slightlydifferent positions.

1 indicates a bed or base provided with the grooves 2 in which fit the projections 30f the slidable member 1. Rollers or other antifrictiondevices such as 5 are providedber as will presently appear. 9

The member -1 is provided with two upwardly extending arms 6 and 7, carrying respectively at their upper extremities the bearings'8 and 9, see Figs. 1 and 4. Jourbetween each nut naled in the said bearing 8 is a shaft 10, carrying the gear 11 and the elongated gear 12, both rigidly secured thereto, see Figs. 1 and 4. The said bearing 8 is also extended as at 13, Fig. 1, to accommodate a power.

shaft 1-1 carrying the gear 15 meshing witl the gear 12, as shown.

Specification of Letters Patent. Patented Feb/27, 1917.

Meshing with the gear 11 is a. gear 16 rigidly mounted on a stub shaft 17, one

end of which is journaled in an eccentric bearing block 18., 'rotatably mounted in the arm 6. The other end of the said shaft 17 end with'a flange 23, carrying one or more spindles 2-1, each surrounded by a sleeve 25, for a-purpose to be more fully disclosed below.

Loosely mounted on the sleeve 22, adjacent the flange 23 is a wheel or disk-like member 26, provided with one or more slots 27. A stud 28 passes through each of said slots and engages the rear wall of a hollow block like member 29, thereby fastening the said members to the face of the said disk 26, but at the same time, permitting them to slide over said face in a manner to be more fully hereinafter described.

The said members 29 are preferably hollow,- as indicated in Figs. 1 and 2, and are provided in the wall opposite to that engaged by the'studs 28, with a slot 30. A block 31 is slidably mounted in the interior ofsaid hollow members 29 and said blocks are the said slots 30, all as will be clear from the drawings. Each block 31 is bored to accommodate a threaded spindle 33, which passes through the head 34 of the member 29, and is journaledin the wall 35 thereof. The bore of the block 31 is larger than the diameter of the said spindle. thus permitting the said block to slide freely along the latter. A pair of threaded nuts 36 and 37 are also mounted within each member 29, engaging the spindles 33, one on each side of each block 31, and aspring 38 is interposed 36 and the said blocks 31,

as shown.

provided with extensions 32 entering I belt or other connection 48, which alsocn u 68, adjustably secured to the disk The members 29 each have an extension or ear 43 provided with an opening adapted to accommodate the sleeve 25 surrounding the spindle 24, around which the said members 29pivot, as will be presently dis-.-

closed.

The sleeve 25 carries on one side of the said ear 43, a gear 45, meshing with a gear 46 mounted on the shaft 10, while on the other side of the said ear 43, the sleeve carries a pulley 47 around which passes a gages the pulley 40, see Figs. 1, 3 and 5. A suitable bel t-tightener, comprising the lug 49 through which passes the rod 50, having the bent end 51 upon which is mounted the roller 52, controlled by the spring 53 and the nut 54 is provided on each of the members 29 to adjust the tension of the belts 48.

Loosely mounted on the sleeve 22 and connected to the disk 26 in any suitable manner,

is the lever 55, having the pivoted member 56, joined as by the connecting rod 57 to the latch 58, controlled by the spring 59. The said latch 58 is adapted to engage the teeth of a gear 60 rigidly mounted on the said sleeve 22, see Figs. 1 and 4.

Rigid with the base 1 is the lug 65, through which passes the threaded shaft 66, secured against relative longitudinal movement in the arm 7, and provided at its end with the star wheel 67. The said star wheel is located in the path of the actuating finger that upon the rotation of the said disk the said star wheel together with its screw shaft 66 will be rotated, and the entire mechanism moved longitudinally of the bed 1, the di-- rection depending upon whether the finger '68 engages the wheel 67 at the top or at the bottom.

The pipe 70 or other. articles'to be ground are held by means not shown in such position that their axes will be in prolongation of the axis of the shaft 10. The abrading wheel, or wheels 42, being then brought into contact with ,the outer or inner surfaces of said pipe as may be desired.

The operation of the machine will be clear from the foregoing, but may bebriefiy summarized as follows :Supposing the parts to be in the positions shown in Fig. 3 and a pipe such as 70, for example has been suitably brought into the position shown, with its extreme end in contact with the peripheries of the said abrasive wheels 42.

Power isnow transmitted through the shaft 14 to the gear 15, and from said gear 1.5 to the elongated gear 12 which being rigid with the driving shaft 10, turns the same together with the gears 11 and 46 rigid with said shaft 10. The turning of the gear 46 turns the several gears 45 and said gears 45 turn the sleeves 25, which rotate the pulleys 47, thus transmitting power through the 7 belts 48 to the pulleys 40, which turn the sleeves 41; carrying the abrading wheels 42. The turning of the said shaft 10 and the said gear 11, also turns the gear 16 rigid with the shaft 17 and the latter turns the gear 20 meshing with the gear 21, which imparts rotation to the sleeve 22, which latter imparts rotation to the gear 60 rigid therewith. The

1 rotation of'the gear 60 imparts rotation to the spring controlled dog 58, and to the arm or lever 55 rigid with said dog.- The said arm or lever 55 is connected with the disk or wheel 26 by any suitable-means, as for example, by the dog 56 so that, as the said sleeve 22 rotates the said disk 26 is also rotated and causes, in turning, each of the abrading wheels 42 to revolve around the pipe 70 being ground through the connections 31 and 39 as shown.

In addition to the above, the turning of the said sleeve 22 causes the flange 23 thereof to turn and to carry with it the spindles 24 on which. are mounte'dthe pulleys 47, so that the pulleys rotating the abrading wheels on their axes revolve around the axis of the pipe 70 along with the abrading wheels 42. Of course, it is obvious that a single abrading wheel 42 may be employed or any suitable number of abrading wheels may be employed. Each abrading wheel is radially adjustable independently of the others through the screw means 33, nuts 36 and 37, etc., all as will be clear from the disclosure above.

The members 33 are conveniently held in position by the ,lock nuts 33, as will be readily understood.

In addition to the independent radial adjustm'ent of the said abrading wheels 42, "they may be simultaneously radially adjusted either toward or from the axis of the no pipe 70 in the manner now to bedescribed.

Referring to Fig. 3, it is evident that the pipe 70 being removed, each abrading wheel 42 may be turned on its corresponding spinvdle 24' as a center from the position shown in adjusted the turning of the disk or wheel 26 on the shaft 10, as a center, will further carry all of the abrading wheels 42 toward or from said shaft 10, according to the direction in which said wheel or disk 26 is rotated. During such. turning movement of the wheel 26, to still further simultaneously radially move the abrading wheels 42, it of course, is necessary that the flange 23 and the sleeve 22 remain stationary. In order that this may be accomplished, the'lever 55 may be disengaged from the said wheel 26 as by turning the dog 56 on its pivot 75, and then turning the said wheel 26 independently of said lever 55 and sleeve 22, or of course, the disengagement of the wheel 26 from the sleeve 22. may be accomplished by raising the dog 58 out of.contact with the gear 60.

The abrading wheels 12 being thus adjusted to theparticular diameter of the pipe or rod being ground, the said wheels -l2 are then continuously rotated on their individual axes '39 as well as continuously revolved around the said pipe or other article in the manner above disclosed. At each revolution of the wheel 26, the pin or finger 68 strikes the star wheel 67, turns the screw shaft 66 and feeds the entire mechanism including the abrading wheels axially of the article 70 being ground, all in a manner that will be clearly understood. It is sometimes desirable to turn the mechanism around the axis 10 by hand and at the same time accomplish the feeding of the said abrading wheels 12 by hand. In such cases the lever 80, see Fig. 1, may be turned by hand thus revolving the eccentrics 18 and 19 to such a position that the gears 16 and 20 will be disengaged from their respective gears 11 and 21. so that the sleeve 22 may turn independently of the power shaft 14.

hen the above disengagement of gears has been accomplished then the wheel 26 may be freely revolved by hand, and with' said wheel, of course, will revolve the abrading wheels 12 and the1r associated mechanism, while the pin 68 and star wheel 67 will accomplish the axial feeding of the said abrading wheels in the manner above disclosed.

'It will thus be seen that the mechanism now'described provides a rotating disk or head 26 together with means adapted to rotate the same, consisting of the sleeve 22 and the gears 15, 12,- 11, 16, shaft 17 and gears 20 and 21; that the said disk or head 26 is loosely mounted on said sleeve 22 but is readily connected to and disconnected from said sleeve by means of the latch 58, gear 60 and associated parts. Said head is provided with a plurality of slots 27 and is associated with a plurality of members 29 pivoted on the spindles 21, and said members 29 are provided with the slidable blocks 31, carrying the spindles or stub shaft 39 and sleeves 41 on which are mounted the abrading or polishing wheels -12.

It results from this that when the head 26 is revolved independently of the sleeve 22 all of the members 29 are canted or moved from their radial positions shown in Fig. 3 to their inclined 'positions shown in Fig. 5, so'that the abrading wheels -l2 are simultaneously adjusted to or from a fixed axis such that of the rotating shaft 10.

In addition to the above simultaneous ad- I j ustment of the wheels 12, it is evident that each wheel may be radially and independently adjusted by means of the screw 33 and block 31. It is further evident that the flange 23 of the sleeve 22 carries an inde-,

pendent power transmitting means consisting of the pulley 17 for rotating its associated wheel 42 through the belt 18, pulley 10 and sleeve 41.

It thus follows that this invention provides two independent radial adjustments of the wheels 42 and that the said "'wheels 42 may be simultaneously radially adjusted while the individual wheels are being rotated on their own axis.

It is obvious that those skilled in the art may vary the details of the construction as well as the arrangement of parts without departing from the spirit of the invention. and therefore, it is not desired to be limited to the above disclosure except as may be required by the claims. V

'hat is claimed is 1. In a machine of the class described the combination of a power shaft; a rotatable head; connections between said shaft and head for rotatingthe latter; an abrading wheel; slidably adjustable connections comprising a radially movable block between said head and wheel; and means comprising a belt and a pair of pulleys for rotating said wheel on its axis independently of said head. substantially as described.

2. In a machine of the class described the combination of a power shaft; a rotatable I I of a grinding wheel: a rotatable head; adjustableconnectlons between said wheel and head by which said wheel may be radially moved toward and from a fixed axis; additional means by which said wheel may be moved toward and from said axis; means for rotating said wheel on its axis; and means for rotating said head and thereby revolving said wheel around said fixed axis, substantially as described.

4. In a grinding machine the combination of a rotatable shaft; a rotatable sleeve carried by said shaft; a power transmitting means carried by said sleeve and adapted to revolve around the axis of said shaft; 2. rotatable head mounted on and revoluble around fifa id sleeve; an abrading wheel carried by sai'd head; a radially movable block mounted means carried by said sleeve and adapted to revolve around the axis of said shaft; a rotatable head loosely mounted on said sleeve;

means adapted to-readily connect and dis connect said sleeve and head; an abrading wheel carried by said head; and connections between said power transmitting means and said wheel for rotating the latter on its axis, substantially as described.

6. In a grinding and polishing machine the combination of a power shaft; arotatable shaft; "means for rotating said last named shaft from said power shaft; a sleeve mounted on. said, rotatable shaft; means for rotating said sleeve; a head loosely mounted on said sleeve; means for readily connecting and disconnecting said head and sleeve; a plurality of abrading disks carried by said head; a plurality of power transmitting means carried by said sleeve one for each disk; and 21 connection between each power transmitting means and disk for rotating the latter on its axis, substantially-as described.

7. In a grinding and polishing machine the combination of a plurality of abrading disks angularly disposed with relation to each other; means for independently adjusting each disk toward and from a fixed axis; and means for adjusting all of said disks simultaneously'toward and from said aXlS.

y 8. In a grindingand polishing'machine the combination of a plurality of abrading disks angularly. disposed with relation to each other; means for independently adjusting each disk toward and from a fixed axis; means for adjusting all of said disks simultaneously toward and from said axis;

- independentmeansfor rotating each disk by said head may be independently rotated when disconnected and said wheel radially adjusted to and from a fixed axis, substantially as described.

10. In a grinding and polishing machine the combination of a rotating means; a rotatable head loosely mounted on said rotating means; a member movably secured to said head and pivotally connected to said rotating means; an abrading wheel carried by said member; means for adjusting said wheel relatively to said member and toward and from a fixed axis; and means for readily connecting and disconnecting said head and. rotating means, whereby said head may be independently rotated when disconnected to independently radially adjust said wheel toand from said fixed axis, substantially as .described.

11. In a grinding and polishing machine the combination of a rotating means; a rotatable head loosely mounted on said rotating means; a hollow member movably secured to said head and pivotally connected td said rotating means; a block slidably mounted in said hollow member; an abrading wheel carried 'by said block; means adapted to move said block and wheel relatively to said member; means including a belt adapted to revolve said wheel upon its axis; means adapted to control the tension of saidbelt; and means for readily connecting'and disconnecting said head and rotating means whereby said head may be independently rotated when disconnected and 1 said wheel radially adjusted to and from a fixed axis, substantially as described.

In testimony whereof I afix my signature, in presence of two Witnesses.

JOHN W. W. CUMMING. Witnesses:

' I). S. MCQUARRIE, M. G. Snanaow. 

